Steam-trap



(No Model.) 3Sheets-Sheet 1. J. H. BLESSING.

v STEAM TRAP. 110.268.38 1. Patented Dec. 5. 1882.

(No Model.) 3 Sheets-Sheet 2.

J. H. BLESSING.

STEAM TRAP. No. 268 384. Patented Dec. 5 1882.

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J. H. BLBSSING.

STEAM TRAP.

Patented Dec. 5, 1882.

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UNITED STATES PATENT QOFFIQE.

JAMES H. BLESSING, OF ALBANY, NINV YORK.

STEAM-TRAP.

SPECIFICATION forming part of Letters Patent No. 268,384, dated December5, 1882.

Application filed October 19, 1862. (No model.)

To all whom it may concern Be it known that I, JAMES H. BLESSING, of thecity of Albany and State of New York, have invented a new and usefulImprovement in Steam-Traps, of which the following is a full, true, andexact description, reference being had to the accompanying drawings.

This invention is an improvement upon the machine previously patented tome on the 27th day of August, 1878, No. 207,484., and it containslikewise an improved arrangementof the air-return pipe patented to me onthe 16th day of November, 1880, No. 234,386.

The special object of my invention is to increase the rapidity and alsothe certainty of action of the trap. This I do by an independentreceptacle so connected with the main trap as to co-operate with it andaid it in its function.

the accompanying drawings, in which similar letters represent similarparts.

Figure l is a plan view of my trap; Fig. 2, a vertical view thereof;Fig. 3, a vertical view thereot' at right angles to Fig. 2; Fig. 4a, acrosssection through Fig. 3, and Fig. 5 a cross-section through Fig. 2.

A represents the case or exterior of the trap;

I, the bucket.

K represents the water-inlet pipe, into which the air-returning pipe Henters.

L represents the equalizing steampipe, and E the siphon passing down tothe bottom of the bucket and connected with the dischargepipe G.

The bucket P travels upon the central guiderod, 9, and is itselfprovided with a tube, h, surrounding said central guide-rod. The upperend of this tube is provided with collars similar in their operation toth se described by me in my previous patent .above referred to. Thebottom of the bucket P is provided with a pocket or cup, f, extendingbelow the general level of the bottom. This pocket is adapted to enterthe corresponding recess '15 in the casing A of the trap. By this meansthe trap can be thoroughly emptied of any contained water.

Connected with the trap is the receiver B. This receiver is providedwith two connections entering the trap, one connecting with My inventionwill be readily understood from ceiver B is the pipe H, which deliversinto the inlet-pipe K through the dip or sealing pipe I). A handair-valve, e, is provided on top of the receiver i The siphon-pipe E isprovided with a chamber, G, at its upper extremity, and this chamberconnects by pipe a with the pipe D, and consequently with the receiverB.

01 is a hand-hole for entering the trap, am 0 an automatic air-valve.Another hand airvalve, k, is shown connected with the chamber O.

The operation of my trap can now be readily understood.

The trap is supposed to be connected with a closed pressure system, thereturn from the coils being. connected at the pipe K. provided with asuitable check-valve, and the pipe Gr communicating with the boilerbelow the water-level through a check-valve, as shown in Fig. 5. Thepipe L is connected with the live steam in the boiler. In starting thetrap the air-valve e should be opened, when the water will flow inthrough the pipe K, entering at first the annular chamber exterior tothe float or bucket P. This bucket will then be floated upward, closingthe equalizing steam-valve in the pipe L, in the well-known way, whenthe screw-valve in said pipeL may be opened, and the steam-pressureadmitted upon the equalizing steam-valve. After the annular spaceexterior to the float P has been filled, the water will flow over theupper edge of said float and commence to fill it. It will also fill thereceiver B and its connecting-pipes. The water will likewise rise in thepipe E, any air which there may be in it escapin through theconnecting-pipe a and air-valve 3 After sufficient water has entered thebucket to overcome the flotation of the exterior water, the bucket willsuddenly sink and a certain amount of additional water in the annularspace will enter the bucket. By this operation the equalizingsteam-valve is closed and the water contained in the bucket begins to beemptied through the siphon-pipe G into the boiler. In so doing the levelof the water in the annular space exterior to the bucket is graduallylowered, and the upward movement of the bucket reduced; but after thebucket has been so far emptied as to uncover the lower end of the pipeD, the water in the reservoir B will flow-immediately into the annularspace, and thereby force the bucket upward with certainty and withconsiderable force. In this way the equalizing steam-valve is againclosed, and a vacuum being formed in the well-known way, the bucket andthe receiver B are once more filled. After the trap has commenced itsproper operation, the air-valve 0 may be closed. Then it any air shouldescape in the chamber 0, it will pass by the pipe a to chamber B, andthence by the pipe h through the sealing-pipe 1) into the delivery tothe trap. Any air entering the trap escapes by the automatic air-valvec, and the sealing-pipe b will prevent the upward movement of any airthrough the pipe H. The pipe H is of course reduced to a very smallopening, as shown at M. By means of the pocket in the bottom of thebucket, the bucket may be thoroughly emptied of water, therebyincreasing the working capacity of the trap. The check-valve fpreventsthe filling of the chamber B, except through the pipe D, and therebyprevents the rattling noise which might otherwise result.

One of the advantages of the auxiliary receptacle B is that the watertherein contained is not brought in contact with the hot steam enteringthrough the equalizing steam-valve, it being found in practice that thewater in the annular chamber surrounding the bucket, being highly heatedby the steam Within the bucket during the process of discharge of thetrap, will fly into steam after the equalizing steam-valve is closed andcondensation commences, thereby delaying the operation of the trap.

By the present arrangement a large body of comparatively cool water issuddenly mingled with the annular stratum surrounding the bucket and itstemperature thereby considerably reduced. The addition of this coolerwater from the receptacle B likewise aids in condensation, and therebyincreases the rapidity of the operation of the trap.

What I claim as my invention, and desire to secure by Letters Patent,is-

1. The combination, with a closed steamtrap, of an auxiliarywater-receiver connected with said steam-trap by two connections, oneentering said trap below the lowest water level in said trap and theother connected with said trap between the highest and lowest level insaid trap, thereby allowing the auxiliary vessel to be alternatelyfilled and emptied, substantially as described.

2. The combination, with a bucket-trap, of an auxiliary receiver, saidauxiliary receiver being connected with the trap by two connections, oneoutside and the other inside of the rising and falling bucket,substantially as de scribed.

3. A siphon bucket-trap provided with a connecting-pipe between thesiphon and an auxiliary receiver connected with said trap and with aconnection from said auxiliary receiver to the water-supply,substantially as described.

4. A steam-trap provided with an auxiliary -receiver connected with saidtrap by two con-- nections entering the trap at different levels, thelower connection being provided with a check-valve opening toward thetrap, substantially as described.

5. A steam-trap provided with a rising and falling bucket, a siphon fordischarging said bucket, and an auxiliary receiving-vessel located abovesaid trap and adapted to be filled from and to discharge into the saidtrap, and with the connections shown, whereby said auxiliary vesseldischarges into the trap only after the bucket has been substantiallyemptied, thereby insuring the closing of the equalizing steam-valve,substantially as described.

JAMES H. BLESSING.

NVitnesses:

Gno. H. EVANS, WM. A. PoLLooK.

